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2 Sheets-Sheet 1. W. W. WALLACE. DIE OR MOLD FOR CLAY PRODUCT MACHINES.

Patented May 15,1894.

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7/2272 edwaq, (2%? 46 W". W. WALLACE. fDIE 0E MOLD FOR CLAY PRODUGT MAGHINES. .No. 519,801.

2 Sheets-Sheet 2.

(No Model) Patented May 15,1894.

wen f 1 UNITED STATES PATENT OFFICE.

WILLIAM W. WALLACE, OF WILLOUGHBY, OHIO, ASSIGNOR TO J. W. PEN- FIELD 8a SON, OF SAME PLACE.

DIE OR MOLD FOR CLAY-PRODUCT MACHINES.

SPECIFICATION forming part of Letters Patent No. 519,801, dated May 15, 1894. Application filed September 28, 1893. Serial No. 486,741- (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM W. WALLACE, of Willoughby, in the county of Lake and State of Ohio, have invented certain new and useful Improvements in Dies or Molds for Clay-Product Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in dies or molds for clay-product-machines, being more especially designed for what is known in the trade as a dry-brick-press, the object being to provide a die or mold that is exceedingly simple and durable in construction and that is composed of parts capable of convenient assemblage or separation.

With this object in view, my invention consists in certain features of construction and in combinations of parts hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure l is a plan, partly in section, of a die or mold embodying my invention. Figs. 2 and 3 are side and end elevations of the same, respectively. Figs. 4. and 5 are side and end elevations of one of the side-pieces of the body of the die or mold, respectively, and Figs. 6 and 7 are side and end elevations, respectively, of one of the end-pieces of the body of the die or mold. Figs. 8 and 9 are an outer or back side and end elevation, respectively, of a plate employed to form an end-wall of one of the openings,chambers or compartments in which the material is compressed. Figs. 10 and 11 are an outer or back side and end elevation, respectively, of a plate employed to form the outer side-Wall of the outer openings, chambers or compartments of the die or mold. Figs. 12 and 18 are a back side and end elevation, respectively, of one of the plates, a pair of which, in conjunction with suitable filling between the pair of plates, constitute or form the walls between adjacent clay-receiving openings or chambers of'the die or mold. Figs. 14: and-15 are sections on lines 14-44.

and l5-15, respectively, Fig.1.

The die or mold illustrated is designed for making four bricks at a time, being provided with four rectangular openings or chambers A for the purpose. The body of the die or mold is consequently rectangular in plan, and is composed of two metallic side-members B and two metallic end-members (J fitted between opposite ends of the side-members, re-

spectively, as shown in Figs. 1 and 3, said members being secured together by bolts and nuts D D, respectively, the bolts extending through corresponding perforations B in the side-members and through holes 0 in the endmembers, the heads of the bolts engaging the outer side of one of the side-members, and the nuts on the bolts abutting the outer side of the other side-member.

The side walls of the compartments or chambers of the die or mold are preferably made of what is known in the trade as white iron. The end-walls of the compartments or chambers of the die or mold are formed, preferably, by a single plate, E, that is finished nicely on its facial side, and, on its back side, is provided with a tongue or tenon e that is adapted to fit in a groove or recess, 6, formed in the inner side of the adjacent side-member of the body of the die or mold, said groove or recess extending preferably from end to end of the side-member. The back side of plates E is, however, ground to nicely fit the side member of the body of the die or mold. It is quite obvious that two surfaces meeting at an angle to each other cannot easily be ground or finished at such angle or corner without the formation of a fillet at the angle or corner, and the presence of a fillet at the point indicated, would render impossible a nice fit of the plate with the respective side-member of the body of the die or mold.

To obviate the difficulty referred to, I cut away the corners, so as to form grooves or recesses, E, between the tongue or tenon on the back side of plates E, and the adjacent portions of said plates, said grooves or recesses extending from the upper edge to the lower edge of the plate. By this construction, said plates can, with great facility, be ground upon their back side without liability of leaving any fillet upon that side that would interfere with a perfect fit of the plate with the re spective side-member of the body of the die or mold.

The outer side walls of the outer compare too ments or chambers of the die or mold are formed by plates F that are also preferablytion of any fillet, in the grinding process, that would obstruct a nice fit of the plate with the respective end-member of the body of the die or mold. The inner side walls of the outer compartments or chambers of the die or mold and both side walls of the inner'compartments or chambers of the die or mold are formed by means of plates G. Plates G are also preferably of white iron. Plates G are nicely finished upon their facial side and chambered upon their back side, respectively, as at g, the chamber being almost as large in area as the area of the respective side of the plate and extending preferably from top to bottom of the plate. The chambers in plates G are enlarged laterally, as at g, to accommodate the location of bolts 1-1, that connect the side-members of the body of the die or mold between adjacent compartments or chambers of the die or mold, said members of the body of the die or mold being suitably perforated for the reception of said bolts, the heads of the bolts engaging the outer side of one of said members of the body of the die or mold and nuts H mounted upon the shanks of the bolts abutting the outer side of the ments or chambers of the die or mold is filled with any suitable material, K, not affected by oil or moisture, lead being a desirable material for the purpose.

The plates that form the end-Walls of the compartments or chambers of the die preferably fit nicely between the plates that form the side-walls of said compartments, but the plates that form the side-Walls need not necessarily nicely fit between the side members of the body of the die or mold.

That I claim is A die or mold having a compartment or chamber that has one or more of its side or end-walls, as the case may be, formed by a metallic plate that, upon its back side, is provided with a tongue or tenon engaging a groove or recess in the body-portion of the die or mold, and cut away or grooved or recessed between the tongue or tenon and the adjacent portions of the plate, substantially as and for the purpose set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 2d day of September, 1893.

\VILLIAM W". VALLAGE. 

